I bought one of these just before the end of snow season in australia and got to wear it once because we had an unexpected dump, and man, I can't wait to wear it again next year. I wore very little under it, found that I was toasty warm but not sweating. There was plenty of give in the right places and I really like also that you can unzip it a bit from the bottom. I got heaps of comments on it and would highly recommend it. Enjoy!!